Aussie Rules is a game which involved holding on to and handling the ball throughout the match and across the pitch. Good ball handling skills are therefore essential, and anything you can do to improve your own skills will pay dividends.
Simply having a ball in your hands as often as possible will really help, and if you practice moving it around and catching or tapping it you will be surprised at how muchg better and more confident you will become in a very short space of time.